TABLE 1.

Stimuli included in SFM/PED broadcasts

Echo delay/duration	1 ms	3 ms	5 ms
SFM (call only)	1 ms call	3 ms call	5 ms call
5 ms delay	1 ms call with 5 ms echo delay	3 ms call with 5 ms echo delay	–
10 ms delay	1 ms call with 10 ms echo delay	3 ms call with 10 ms echo delay	5 ms call with 10 ms echo delay
15 ms delay	1 ms call with 15 ms echo delay	3 ms call with 15 ms echo delay	5 ms call with 15 ms echo delay
20 ms delay	1 ms call with 20 ms echo delay	3 ms call with 20 ms echo delay	5 ms call with 20 ms echo delay
25 ms delay	1 ms call with 25 ms delay	3 ms call with 25 ms echo delay	5 ms call with 25 ms echo delay
30 ms delay	1 ms call with 30 ms echo delay	3 ms call with 30 ms echo delay	5 ms call with 30 ms echo delay
35 ms delay	1 ms call with 35 ms echo delay	3 ms call with 35 ms echo delay	5 ms call with 35 ms echo delay